Pyrolytic synthesis and Eu3+→Eu2+ reduction process of blue-emitting perovskite-type BaLiF3: Eu thin films

Shinobu Fujihara, Yoko Kishiki, Toshio Kimura

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Perovskite-type barium lithium fluoride (BaLiF3) was synthesized by pyrolysis of metal trifluoroacetates. The reaction temperature necessary for producing a single-phase material was found to be 600°C, which was lower than that for a conventional solid-state reaction or a melting method. Eu-doped BaLiF3 was also prepared and characterized to examine the suitability of trifluoroacetates for precursors in synthesizing homogeneous complex metal fluoride materials. It was demonstrated that trivalent Eu3+, which was used as acetate for a starting material, was reduced to divalent Eu2+ in the pyrolysis process of BaLiF 3, as indicated by a broad blue emission due to an allowed 4f 65d→4f7 transition at 408nm with a ultraviolet excitation at 254nm. The concentration quenching of the blue emission occurred at 5at% of Eu in BaLiF3, indicating that Eu was homogeneously dispersed in the BaLiF3 host lattice. Mechanisms of the formation and reduction process of BaLiF3 were discussed based on pertinent chemical reactions.

Original languageEnglish
Pages (from-to)1032-1036
Number of pages5
JournalJournal of Solid State Chemistry
Volume177
Issue number3
DOIs
Publication statusPublished - 2004 Mar

Fingerprint

Perovskite
pyrolysis
Trifluoroacetic Acid
barium fluorides
metal fluorides
Thin films
lithium fluorides
Pyrolysis
synthesis
thin films
acetates
chemical reactions
quenching
Coordination Complexes
melting
Barium
Metal complexes
solid state
Solid state reactions
Fluorides

Keywords

  • Barium lithium fluoride
  • Decomposition
  • Photoluminescence
  • Reduction
  • Trifluoroacetates

ASJC Scopus subject areas

  • Inorganic Chemistry
  • Physical and Theoretical Chemistry
  • Materials Chemistry

Cite this

Pyrolytic synthesis and Eu3+→Eu2+ reduction process of blue-emitting perovskite-type BaLiF3 : Eu thin films. / Fujihara, Shinobu; Kishiki, Yoko; Kimura, Toshio.

In: Journal of Solid State Chemistry, Vol. 177, No. 3, 03.2004, p. 1032-1036.

Research output: Contribution to journalArticle

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AB - Perovskite-type barium lithium fluoride (BaLiF3) was synthesized by pyrolysis of metal trifluoroacetates. The reaction temperature necessary for producing a single-phase material was found to be 600°C, which was lower than that for a conventional solid-state reaction or a melting method. Eu-doped BaLiF3 was also prepared and characterized to examine the suitability of trifluoroacetates for precursors in synthesizing homogeneous complex metal fluoride materials. It was demonstrated that trivalent Eu3+, which was used as acetate for a starting material, was reduced to divalent Eu2+ in the pyrolysis process of BaLiF 3, as indicated by a broad blue emission due to an allowed 4f 65d→4f7 transition at 408nm with a ultraviolet excitation at 254nm. The concentration quenching of the blue emission occurred at 5at% of Eu in BaLiF3, indicating that Eu was homogeneously dispersed in the BaLiF3 host lattice. Mechanisms of the formation and reduction process of BaLiF3 were discussed based on pertinent chemical reactions.

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